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Q.

The chemical formula of a substance shows ________________.

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a

 The actual number of atoms of each element in one molecule of a substance.

b

The elements that makeup one molecule of the substance and the simplest whole-number ratio between the atoms.

c

The number of molecules in a sample of the substance.

d

The molecular mass of the substance

answer is B.

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Detailed Solution

  • The chemical formula of a substance shows the elements that makeup one molecule of the substance and the simplest whole-number ratio between the atoms.
  •  For example, MgCl2 is the chemical formula of magnesium chloride. It shows that magnesium and chlorine combine in a ratio of 1:2 to form magnesium chloride.
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